On the need of distinguishing ductile and brittle failure modes in timber connections with dowel-type fasteners
Keywords: 
Timber connection
Brittle failure
Ductile failure
Dowel-type fasteners
Parallel-to-grain
Effective number of fasteners
Eurocode 5
Issue Date: 
2021
OpenAIRE: 
COST Action FP1402
ISSN: 
0141-0296
Note: 
This is an open access article under the CC BY-NC-ND license
Citation: 
Yurrita-Lozano, M. (Miguel); Cabrero-Ballarín, J. (José Manuel). "On the need of distinguishing ductile and brittle failure modes in timber connections with dowel-type fasteners". Engineering structures. 242, 2021, 112496
Abstract
Timber connections can fail in a ductile or in a brittle way. A structural design that guarantees a ductile behaviour in case of failure is desirable, especially when facing extreme situations such as earthquakes. This work discusses how the European Yield Model (based on a ductile failure mechanism), included in many standards, combined with a reduction of the effective number of fasteners may provide too conservative results, which may inadvertently lead to risky situations in which a connection assumed to fail under a ductile mechanism would actually fail in a brittle manner. Within this paper, a proposal to improve the discrimination ability to correctly predict the failure mode is proposed.

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